CN103765679A

CN103765679A - Solderable contact

Info

Publication number: CN103765679A
Application number: CN201280042242.6A
Authority: CN
Inventors: M·诺里奇; A·拉克劳斯基
Original assignee: Amphenol Tuchel Electronics GmbH
Current assignee: Amphenol Tuchel Electronics GmbH
Priority date: 2011-08-30
Filing date: 2012-08-04
Publication date: 2014-04-30
Also published as: EP2751875A1; US20140227918A1; JP2014527700A; DE102011112014B3; WO2013029739A1

Abstract

The invention relates to a solderable contact formed by a substantially U-shaped contact part consisting of a base plate with two legs that are joined to the base plate. A spring arm which is arranged on one leg extends in the direction of the leg opposite said leg. The opposite leg has two lateral wings which are form-fittingly connected to the leg by means of connecting sections.

Description

Welding contact

Technical field

The present invention relates to a kind of according to the welding contact/solder contacts of claim 1 preamble.

The present invention therefore relate to a kind of for be welded to parts carrier, be particularly welded on printed circuit board (PCB) can springing welding contact.

Background technology

Different welding contact embodiment are from well known in the prior art.

DE60220266T2 has disclosed a kind of spring contact, this spring contact consists of (metal) sheet material of elastomeric material and comprises base bar and bow strip, wherein this bow strip and this base strip are along spaced and form space and flexible bending area is provided between the two, this bending area makes the end of base strip be connected to the end of bow strip, wherein base strip and bow strip extend in a longitudinal direction and this flexible bending area by flexibly prestrain.

Welding contact be generally soldered on printed circuit board (PCB) be welded to touch screen or the contact position of printed circuit board (PCB) on.

These contacts stand mechanical load and the heat load of varying level in transportation and processing procedure.

Therefore firm and stable welding contact is provided enough is in actual use debatable, these welding contacts for transportation object and treatment facility, be particularly suitable and there is sufficiently stable design and under the state welding, in stand under load and non-stand under load position can by reliable, without shifting ground, be fixed on printed circuit board (PCB).

Summary of the invention

Therefore, the object of this invention is to provide a kind of for the stable welding contact of printed circuit board (PCB), particularly can springing welding contact, this welding contact has enough shape stabilities and can tolerate the mechanical load and the heat load that occur.

In other words, the present invention wishes to solve the technical problem of touching spring and bear distortion residual distortion and initiation or that occur in assembling process.

Contact according to the present invention below also will be called as spring binding clip/contact (Kontaktclip), because it is the contact of a kind of energy springing substantially.

Spring binding clip according to the present invention shows extremely low ratio of defects and spoilage in assembling and transportation.

Therefore likely reduce costs and percent defective is minimized.

In assembling process, contact forces to be retained on a position by clamper, and this may cause distortion and type to become or set up in contact may be because unexpected deformation force is incorporated into the internal stress in this contact.

In welding, just tilt/bending of contact is also left its desired location after a while.

Cause so incorrect height, normal force minimizing or other material relevant issues, described problem can adversely affect electrical property and the useful life of contact or cause contact system complete failure.

Contact according to the present invention has U-shaped shape, forms alar part structure, in its both sides, is provided with alar part in other words at U-shaped end place.These alar parts play the function of derivation power.

Generally speaking, the invention provides the welding contact of a kind of energy springing, the welding contact of this energy springing has the basic configuration that is essentially U-shaped, is formed with two inside outstanding alar parts on this welding contact on a supporting leg of this U-shaped shape.

The alar part of protection U-shaped shape shows as the form of " for the protection of the protector that touches spring ".

According to contact of the present invention, also there is the weld pass/solder passage in a side leg that extends to welding contact on bottom side.

This weld pass produces stable connection for the substrate of this welding contact on the one hand, thus shearing and pulling force is had to active influence.

By the combination of alar part and weld pass, avoid on the other hand transverse warping, particularly rotated, thereby further reduced the risk of damaging.

The advantage on the other hand of intilted alar part is: for example avoided particularly the situation of mutually hooking with work gloves.

In a particularly advantageous embodiment, U-shaped alar part has radius/arc sections (Radius) and across corner is carried out chamfering in its edge.

Accompanying drawing explanation

By the mode by preferred embodiment and with reference to accompanying drawing, explain in more detail the present invention hereinafter, in the accompanying drawings:

Fig. 1 illustrates the perspective view of the first exemplary embodiment of the present invention;

Fig. 2 illustrates the figure from the exemplary embodiment of Fig. 1, and this figure and Fig. 1 are similar, but transfers, from different visual angles, this embodiment is shown;

Fig. 3 illustrates and the similar Alternative exemplary embodiment of embodiment from Fig. 1 and Fig. 2;

Fig. 4 illustrates that the present invention welds the middle production phase of the principle that contact connects on gib block; And

Fig. 5 illustrates according to the end view of the details of Fig. 4.

Embodiment

Fig. 1 and Fig. 2 have shown the first exemplary embodiment of the present invention, say exactly welding contact 1 or spring binding clip 1.

This welding contact 1 is designed to the welding contact 1 for U-shaped substantially, and this welding contact consists of together with two supporting

legs

3,4 substrate 2.

This U-shaped shape is intended to represent the structure of substrate 2 and two supporting

legs

3,4, and substrate and supporting leg are directed relative to each other and be closely adjacent to each other with 90 ° of angles.

Substrate (as shown in fig. 1) is designed to be essentially substrate 2 microscler or rectangle, an each outrigger plate 3 and outrigger plate 4 arranged on the longitudinal end of this substrate.

Outrigger plate

3,4 below will be called supporting

leg

3,4 for short.

On supporting leg 3, be fixed with elastic arm 5, this elastic arm has the first elastic arm part 6a that is arranged essentially parallel to this substrate extension, this first elastic arm divides via bend 7 adjacent with the second elastic arm part 6b, to deviate from, the mode of substrate is bending extends and adjacent with the 3rd elastic arm part 6c via elastic heave 6 this second elastic arm part, the 3rd elastic arm part along comparing contrary direction with the second elastic arm part 6b to back bending song, says roughly the direction bending towards substrate 2 due to the curvature in elastic heave 6 exactly.

Owing to having obtained the structure that is essentially V-arrangement of the elastic arm 5 being formed by

elastic arm part

6b, 6c.

In a particularly advantageous embodiment, this elastic heave 6 comes bending according to Radius.

As found out in Fig. 2, the supporting leg 4 relative with supporting leg 3 has two

alar part

10a, 10b, and these alar parts form reinforcing section 10 together with supporting leg 4.

These

alar parts

10a, 10b are via

coupling part

12a, 12b, and---saying exactly bending

coupling part

12a, 12b---is connected on supporting leg 4 in a kind of mode of form fit.

In addition, these

alar parts

10a, 10b are bending and slightly inside with a radius of curvature direction of corresponding opposed alar part---towards---extends.

Realized thus a kind of reinforcing section 10 that is essentially U-shaped, wherein two of this U-shaped supporting legs are formed by

alar part

10a, 10b, although this U-shaped must form with curve form.

A kind of spring binding clip 1 of stable especially and resistance to deformation is provided thus.

Fig. 3 illustrates exemplary embodiment, and this exemplary embodiment is the replacement scheme of Fig. 1 and Fig. 2, and wherein supporting

leg

3,4 has the design of lengthening, and therefore elastic heave 6 is spaced apart significantly with substrate 2.

Make thus likely to produce variable size/telescopic spring binding clip, the structure (as seen in Fig. 3) that these spring binding clip utilizations are

alar part

10a, 10b is equally although and height having has also been realized stable especially spring binding clip.

In Fig. 1, Fig. 2 and Fig. 3, shown according to the further feature of spring binding clip 1 of the present invention, said that exactly weld pass 9 is formed among the region of substrate 2.The first weld pass part 9a of weld pass 9 extends and passes among supporting leg 3 in the region of substrate 2.Therefore weld pass part 9b is arranged in supporting leg 3.These two

weld pass part

9a, 9b therefore link position between substrate 2 and supporting leg 3 extend, and a kind of shape stable especially, that have torsional rigid is provided thus.

In addition, this weld pass is applicable to realize stable being especially welded to connect, described in be welded to connect with regard to the breach 8 being just offset with respect to this weld pass and be arranged on equally in substrate, say that exactly long side-draw along substrate 2 is to setting.Breach 8 preferably extends in supporting leg 4.

Result is that scolder can flow in this breach 8 in welding process, and forms supporting (gegenlager) for the passage being formed by weld pass 9.

According to the present invention, provide thus spring binding clip 1 that can firmly connect, stable especially.

Fig. 4 and Fig. 5 were shown schematically in by way of example according to the starting stage/preproduction phase in manufacture of the present invention, that be formed at the spring binding clip on gib block.The example that spring binding clip 1 is shown on gib block according to Fig. 4, wherein

alar part

10a, 10b are only schematically indicated.

But according to the present invention, these

alar parts

10a, 10b can be designed so that their fill about 20% to 30% at the area of section shown in end view of U-shaped spring binding clip 1, to produce enough stability and shape rigidity.

Reference numerals list

Welding contact

1 spring binding clip (welding contact, the welding contact of energy springing)

2 substrates

3 supporting legs

4 supporting legs

5 elastic arms

6 elastic heaves

6a elastic arm part

6b elastic arm part

6c elastic arm part

7 bends

8 breach

9 weld passes

9a the first weld pass part

9b the second weld pass part

10 reinforcing sections

10a alar part

10b alar part

11 breach

12a, 12b coupling part

Claims

1. a welding contact (1), this welding contact comprises the contact portion that is essentially U-shaped, wherein this U-shaped contact portion comprises substrate (2) and is formed at two supporting legs (3 on this substrate (2), 4), a supporting leg (3) is provided with elastic arm (5) therein, this elastic arm extends towards the direction of the supporting leg (4) relative with this supporting leg (3) aspect its orientation, it is characterized in that: supporting leg (4) has two alar part (10a that form in side direction, 10b), described alar part is via coupling part (12a, 12b) in the mode of form fit, be connected to this supporting leg (4).

2. welding contact as claimed in claim 1 (1), is characterized in that, described alar part (10a, 10b) is designed to bending alar part (10a, 10b).

3. welding contact as claimed in claim 1 or 2 (1), is characterized in that, the structure for curvature section of described alar part (10a, 10b) becomes to make it bending toward each other.

4. according to the one or more described welding contact (1) in above claim, it is characterized in that, in substrate (2), be formed with weld pass (9).

5. according to the one or more described welding contact (1) in above claim 1 to 4, it is characterized in that, at least in supporting leg (3), form extendible portion or the part of weld pass part (9b) as described weld pass (9).

6. according to the one or more described welding contact (1) in above claim 1 to 5, it is characterized in that, in substrate (2), be provided with breach (8).

7. according to the welding contact (1) described in one or more in above claim 1 to 6, it is characterized in that, the area of described alar part (10a, 10b) be U-shaped contact portion area of section at least 20% to 30%.